ASTROSAT CZTI

Data Quality Report

Orbit 30703

Creation date: 2024-06-27T20:18:39.272990
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_058T14_9000004430_30703cztM0_level2.evt modeM0/AS1A10_058T14_9000004430_30703cztM0_level2_quad_clean.evt
Size (bytes)677,347,20094,086,720
Size646.0 MB 89.7 MB
Events in quadrant A3,669,102626,803
Events in quadrant B5,385,046623,079
Events in quadrant C3,658,619606,325
Events in quadrant D7,373,876551,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147262
B0198772
C0147832
D0261402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63311632.574633%
B63311903.001106%
C63312574.059390%
D633178612.415100%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7591 6331 25 25 0.33% 0.39%
B 7591 6331 19 19 0.25% 0.30%
C 7590 6330 1 1 0.01% 0.02%
D 7591 6331 708 708 9.33% 11.18%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 221485 1247.97 891 878 176.8
A 8 192 12753 67.18 891 878 176.8
A 13 254 12127 63.64 891 878 176.8
B 6 159 1758827 10765.76 873 855 163.3
B 0 190 82032 497.13 873 855 163.3
B 0 230 60051 362.51 873 855 163.3
C 14 238 159411 813.39 848 858 194.9
C 3 233 95184 483.9 848 858 194.9
C 0 10 41415 208.06 848 858 194.9
D 8 195 3657521 16606.79 834 820 220.2
D 13 249 182728 826.13 834 820 220.2
D 12 33 182210 823.78 834 820 220.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter